Comment on Notice under Section 139(9)? - Possible reason
Can you check this module: http://zerodha.com/varsity/module/markets-and-taxation/. Just your Ledger, P&L, and your bank statements should do.
Can you check this module: http://zerodha.com/varsity/module/markets-and-taxation/. Just your Ledger, P&L, and your bank statements should do.